Mitochondria - The mitochondria is referred to as the power house of the cell. Its main function if to produceenergy for cell by the process of cellular respiration. The energyproduced is ATP. Endoplasmic Reticulum - It is a network for transportation of certain substances in and out of the nucleus.
Answer:
Does your bio textbook show you?
I think it's A. Tell me if I'm wrong.
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Answer:
D. it takes millions of years to form
